Need some help guys. It started with a spot now its a patch! Newbie first grow

Hi RIU!

I've got a small problem and would like some advice. One of my seedlings, about 3 weeks old now, had a brown spot on the first set of true leaves the day after feeding. I thought it may be a bit of coco so I tried to wipe it a drop of water but it wouldn't budge. It was not all the way through the leaf just the top, not underneath. So I assumed it may be a burn mark from a splash and switched its location with another plant.


Today I have come back to it and there is now a patch there instead of a spot!!! :/

Here are some pics.

This is from yesterday.



These are from today.




It is 3 weeks old now. I had to put it in it's pot at 3 days cos it was too tall from stretch. I have only ever given it ph'd water and some hygrozyme and nitrozyne occasionally until 3 days ago when I gave it it's first feed at quart strength.

I'm doing it in coco with coco a and b along with hygrozyme and nitrozyme.

I have some others which are all in the same boat and they don't seem to have this problem. It's just this one and now I'm worried.

Any help/advice would and is appreciated.

Thank you.

I wouldn't worry too much about it. The first set of leaves have a tendancy to be funky. Generally though I don't fert until they're bigger than that, say at least 6 inches with several sets of leaves, so a little nute shock isn't out of the question, but 1/4 strength shouldn't hurt them. If it spreads to the new growth leaves you have a problem, but that doesn't look bad.

Merlin34 said:

I wouldn't worry too much about it. The first set of leaves have a tendancy to be funky. Generally though I don't fert until they're bigger than that, say at least 6 inches with several sets of leaves, so a little nute shock isn't out of the question, but 1/4 strength shouldn't hurt them. If it spreads to the new growth leaves you have a problem, but that doesn't look bad.

Click to expand...

Okay bud thanks for those words of wisdom, this is my first grow hence why I'm worried. I'm not overly worried cos the others in the set are okay. I'm keeping an eye on it though. The other sets of leaves are ok and it looks like it's growing new tips...

I will keep this posted.

NEW INFO:

Having been in my grow room now just checking, I noticed that the plant in question has a leafy, gardening smell to it.
None of the others have any kinda smell at all :/

I wonder what this could be?!?